fix: use Claude Sonnet 4.5 with toolChoice required for reliable tool calling in tests

- Update tests to use anthropic/claude-sonnet-4.5 instead of gpt-4o-mini
- Add toolChoice: 'required' to force tool usage
- Fix type error in model-result.ts (use 'as' instead of 'satisfies')

These changes ensure more reliable tool calling in CI tests.

Author: mattapperson

src/lib/model-result.ts

@@ -178,8 +178,8 @@ export class ModelResult {
         // Since request is CallModelInput, we need to filter out tools/stopWhen
         // eslint-disable-next-line @typescript-eslint/no-unused-vars
         const { tools, stopWhen, ...rest } = this.options.request;
-        // Use satisfies to validate type compatibility while maintaining the target type
-        baseRequest = rest as ResolvedCallModelInput satisfies ResolvedCallModelInput;
+        // Cast to ResolvedCallModelInput - we know it's resolved if hasAsyncFunctions returned false
+        baseRequest = rest as ResolvedCallModelInput;
       }
 
       // Store resolved request with stream mode

tests/e2e/call-model.test.ts

@@ -96,13 +96,14 @@ describe('callModel E2E Tests', () => {
 
     it('should accept chat-style tools (ToolDefinitionJson)', async () => {
       const response = client.callModel({
-        model: 'qwen/qwen3-vl-8b-instruct',
+        model: 'anthropic/claude-sonnet-4.5',
         input: fromChatMessages([
           {
             role: 'user',
-            content: "What's the weather in Paris? Use the get_weather tool.",
+            content: "What's the weather in Paris?",
           },
         ]),
+        toolChoice: 'required',
         tools: [
           {
             type: ToolType.Function,
@@ -575,13 +576,14 @@ describe('callModel E2E Tests', () => {
 
     it('should include OpenResponsesFunctionCallOutput with correct shape when tools are executed', async () => {
       const response = client.callModel({
-        model: 'openai/gpt-4o-mini',
+        model: 'anthropic/claude-sonnet-4.5',
         input: fromChatMessages([
           {
             role: 'user',
-            content: "What's the weather in Tokyo? Use the get_weather tool.",
+            content: "What's the weather in Tokyo?",
           },
         ]),
+        toolChoice: 'required',
         tools: [
           {
             type: ToolType.Function,